Wedge-cutting machine.



H. LEGHTENBERG. WEDGE GUTTIN G MACHINE.

APPLICATION I'ILED APR. 17, 1909 Patented Mar. 8, 1910.

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Patented Mar.8,1910.

APPLICATION FILED APR. 17, 1909,

l l N ITEI) STATES PATENT OFFICE.

HENRY LECHTENBERG, OF QUINCY, ILLINOIS, ASSIGNOR TO CENTRAL IRON WORKS,OF QUINCY, ILLINOIS, A CORPORATION.

WEDGE-CUTTING MACHINE.

Specification of Letters Patent.

Patented Mar. 8, 1910.

To all whom it may concern:

Be it known that I, HENRY LEOHTENBERG, a citizen. of the United Statesof America, residing at Quincy, in the county of Adams and State ofIllinois, have invented certain new and useful Improvements in WVedge-Cutting Machines, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, formingpart of this specification.

My invention relates to a machine for cutting wedges from blocks ofwood, the invention having for its object the production of a machine ofthis description which is of very simple construction and in which thepart by which the blocks of wood are supported may be adjustedvertically for the purpose of permitting the cutting of wedges ofdifierent degrees of angle.

Figure I is a perspective view of my wedge cutting machine. Fig. II is atop or plan view of the machine partly in horizontal section. Fig. IIIis a longitudinal sec tion taken centrally through the machine. Fig. IVis a vertical section taken on the irregular line IVIV, Fig. III.

In the accompanying drawings :1 designates the side members of the frameof my machine which are provided with laterally extending lugs or ears 2adapted to receive screws or bolts by which the frame members, which arearranged parallel with each other, may be secured upon a bench or othersupport. At the inner side of each side frame member and at the bottomthereof is a longitudinal runway groove 3, (see full lines Figs. III andIV and dotted lines Fig. II.) Projecting upwardly from the side framemembers, near their ends, are vertical extensions 4 provided at theirinner sides with inwardly inclined knife sockets 5 that receive theedges of a cutting blade 6. The cutting blade extends longitudinally ofthe machine, is inclined downwardly from its rear end, and its cuttingedge is presented toward the end of the machine farthest removed fromthat at which the cutting blade is located.

7 is a clamping bolt mounted in the Vertical extensions of the sideframe members and extending transversely across the cutting blade aboveit, the said clamping bolt being designed to draw the verticalextensions 4' of the side frame members toward each other to asufficient degree to provide for their exerting a clamping pressureagainst the edges of the cutting blade to hold it from movementlongitudinally of the machine.

8 designates a hand lever provided at its inner end with a head 9located between the frame members 1 at the end of the machine farthestremoved from the cutting blade 6 and which is pivotally connected to theside frame members by a bolt 10 that passes fhrough said members and thehead of the ever.

11 is a connecting rod pivoted at 12 to the hand lever 8.

13 designates a carrier operable between the side frames 1longitudinally of the machine and to which the connecting rod 11 ispivoted at 14. This carrier is provided with side fins 15 operable inthe runway grooves in the inner sides of the frame members and whose endwalls serve to restrict the forward and rearward movements of thecarrier.

16 is a horizontal arm projecting forwardly from the carrier 13 and inwhich is a vertical screw threaded aperture 17. At the forward end ofthe carrier is a vertical shoulder 18 and between said vertical shoulderand the rear end of the horizontal arm 16 is an ear 19.

20 designates a pivoted block rest having an inclined upper face and therear end of which is connected by a pivot pin 21 to the ear 19 at thefront end of the carrier 13. The block rest is located at a lower levelthan the cutting blade 6 and is inclined downwardly from its rear endtoward its forward end that extends in a direction toward the cuttingblade 6. At the bottom of the block rest is a rounded socket 22 andextending vertically through said rest at the location of said socket isan aperture 23.

24 is an adjusting screw seated in the screw threaded aperture 17 in thearm 16 at the forward end of the carrier 13 and the upper end of whichis rounded and occupies the rounded socket 22 at the bottom of the blockrest. This adjusting screw serves as a support for the block rest and itis slotted at its upper end to provide for the application thereto of ascrew driver, or other suitable implement, when the implement isintroduced through the aperture. By introducing an implement, asmentioned, through said aperture and into engagement with the adjustingscrew, said screw may be turned to any desired degree for the purpose ofelevating 0r lowering the block rest, thereby providing for said restbeing so upheld as to permit the cuttii'lg of wedges having differentangles.

25 is a block, that may be of lead, or any other suitable material,inserted in the carrier 13 at the rear of the shoulder 18 and which isso positioned as to receive the cutting edge of the cutting blade 6 inthe event of the carrier being moved toward said cutting blade to suchdegree as to cause the cutting blade to be touched thereby.

I claim A Wedge cutting machine comprising side members, a cuttingblade, a carrier formed integral with a vertical shoulder at its forward end, with a forwardly projecting horizontal arm having a verticalscrew threaded orifice and wlth an ear between the vertical shoulder andthe rear end of the horizontal 7 arm, an adjusting screw having arounded upper end and adjustable in the vertical screw threaded orificeof the horizontal arm, a block rest pivoted to the ear of the carrierand formed with a tool-aperture and a rounded screw socket receiving therounded head of the adj 'ustin screw and on which the free end of theblock rest is supported, and means for reciprocating the carrier.

HENRY LECHTENBERG. In the presence of H. C. Sorrnrrnn, IIARRYHninnnnnnn.

